Thermal Conductivity Testing Machine Thermal Resistance Tester for Rubber And Silicone

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thermal conductivity tester, thermal resistance tester

Thermal Conductivity Testing Machine Thermal Resistance Tester for Rubber And Silicone

HZ‑7039 Thermal Conductivity Testing Machine is professional steady‑state thermal performance lab instrument. It measures thermal conductivity, thermal resistance and interface thermal contact resistance for thin heat‑conduction solids, electrical insulation rubber, silicone, thermal grease, resin and ceramic materials. Solid sheet‑shaped rubber samples can be tested directly. With auxiliary sample enclosure box, it also supports powder‑state and paste‑form thermal‑interface rubber compounds.

Compliance Test Standards

ASTM D5470‑2006
ISO 8301:1991, ISO 8302:1991

Applicable IndustryUniversity laboratories, research institutes, third‑party quality‑inspection departments, rubber & silicone thermal‑interface‑material manufacturing factories. Main Test Sample: various solid sheet rubber, conductive rubber, silicone rubber, thermal conductive rubber sheet.

Equipment summary
Main functions
Corresponding standard
Technical parameters

This thermal conductivity tester adopts steady‑state temperature‑gradient heat‑flow testing principle. It integrates automatic compression mechanism and automatic thickness measuring device. Equipped with high‑precision heating & refrigeration unit, multi‑channel temperature collecting module, high‑accuracy pressure displacement sensor and industrial computer control system.

Under vacuum environment (0.1 MPa vacuum degree), the machine applies different compressive load on rubber specimens. It collects multi‑point temperature gradient data. Optimized mathematical model calculates thermal conductivity, thermal resistance and interface contact thermal resistance. Computer completes full‑process automatic test, data storage, curve drawing and report print‑out.

The machine is equipped with independent heating‑cooling circulation unit. PID multi‑group parameter setting provides complete over‑heat, overload safety protection for long‑time continuous laboratory testing.

Automatic compression & automatic thickness‑measuring: Servo‑driven automatic pressing mechanism, real‑time automatic sample thickness acquisition, computer whole‑process automatic control.
Temperature‑gradient detection technology: Multi‑point temperature‑gradient acquisition improves test accuracy for rubber and thermal‑interface samples.
Multi‑parameter test capability: Can test thermal‑resistance curves under different pressure loads; calculate thermal conductivity, bulk thermal resistance and interface contact thermal resistance via optimized mathematic algorithm.
Vacuum test environment: 0.1 MPa vacuum degree, eliminate air‑interference, enhance repeatability for thin‑sheet rubber samples.
Rich temperature & pressure range: Wide hot/cold temperature range, 0‑1000N adjustable test pressure, adapt various soft‑hard rubber material requirements.
Powerful PID control: 9 groups PID configurable parameters; compressor over‑load, over‑heating multi‑safety protection.
High‑precision 24‑bit digital acquisition chip: Reduce signal noise, guarantee data stability.
Complete test output: Real‑time curve display, data saving, analysis and printable test report.
Multiple sample forms: Test solid sheet rubber directly; test powder / paste thermal‑interface rubber with sample enclosure box.

Item	HZ‑7039 Specification
Max Sample Diameter	＜30 mm
Sample Thickness Range	0.02‑20 mm
Hot‑side Temperature Range	RT ~ 299.99 °C
Cold‑side Temperature Range	0 ~ 99.00 °C
Thermal Conductivity Test Range	0.01~50 W/m·k，1~300 W/m·k
Thermal Resistance Test Range	0.05 ~ 0.000005 m²·K/W
Pressure Measuring Range	0 ~ 1000 N
Displacement Measuring Range	0 ~ 30.00 mm
Test Accuracy	±3 %
Vacuum Test Environment	0.1 MPa vacuum degree
Control Mode	Computer automatic control + local panel operation
Test Items	Thermal resistance under different pressure; material thermal conductivity; interface contact thermal resistance
Refrigerant	R404A environmental‑friendly refrigerant